My dad is 68 years old. He was lately irritable and disoriented even violent sometimes. He started acting very strange from the tym he was diagnosed having tuberculosis ang was adviced 2 take anti tb meds. But be only took the 2 meds and and didnt take the isoniazid. He was ct scanned and was diagnosed of having mild chronic small vessel ischemic changes involving the celebral white matter. Pls help.. I do not understnd this disease.